Photographic silver halide light-sensitive material containing azo dyes

ABSTRACT

The present invention relates to photographic light-sensitive material, especially for the silver dyestuff bleaching process, containing an azo dyestuff of the formula

United States Patent [1. 1

Froehlich 1 Nov. 6, 1973 PHOTOGRAPHIC SlLVER-HALIDE LIGHT-SENSITIVE MATERIAL CONTAINING Azo DYES [75] Inventor: Alfred Froehlich,Marly-le-Grand,

211 Appl. No.: 140,302

[30] Foreign Application Priority Data May 5, 1970 Switzerland 6686/70 [52] US. Cl 96/99, 96/73, 260/152, 260/174, 260/178, 260/181, 260/184, 260/186, 260/187 Primary Exa'minerJ. Travis Brown Attorney-Harry Goldsmith, Joseph G. Kolodny and Mario A. Monaco v 57 ABSTRACT I The present invention relates to photographic light sensitive material, especially for the silver dyestuff.

bleaching process, containing an-azo'dyestuff of the formula in which A represents a naphthalene residue containing 1 to 2 sulphonic acid groups or sulphonic acid amide groups, bonded in the 1 position to the azo group, in the 2 position to a possibly substitutedamino group and in-the.8 position to a group min the 2po'sition to the azo group, in the 8 position to a possibly substituted amino group and in the 1 position to a hydroxyl group, M stands for a possibly substituted benzene residue and Y for a possibly substituted benzene, diphenyl, diphenylsulphon or di-(phenylamino)-acylic residue, X stands for O, S, SO, SO,, CO- or NR- and Z stands for CO', S, SO-, SO,, CO-, NR,, ClNR, NR,--CO-, SO NR or NR,SO in which R and R represent a hydrogen atom or a low alkyl residue, in which n l or 2 and 0 stands for a possibly substituted heterocyclic residue, alkyl or benzene residue or a residue of the formula in which D represents a possibly substituted benzene ornaphthalene residue and E has the meaning which is stated in respect of A. These dyestuffs are magenta dyestuffs, preferably image dyestuffs in silver dyestuff bleaching material.

8 Claims, No Drawings PHOTOGRAPHIC SILVER HALIDE The invention relates to azo dyestuffs of the formula in which A represents a naphthalene residue containingl to 2 sulphonic acid groups or sulphonic acid amide groups, bonded in the l-position to the azo group, in the 2-position to a possibly substituted amino group and in the 8-position to a hydroxyl group or in the 2- position to the azo group, in the 8-position to a possibly substituted amino group and in the 1-position to a hydroxyl group, M stands for a possibly substituted benzene residue and Y for a possibly substituted benzene, diphenyl, diphenylsulphon or di-(phenylamino)'-acylic residue, X stands for O, 'S, S() SQ2, CO- or -'-NR and Z stands for --CO, S', -SO, SO,, --CO, NR,, Cl--NR,--, NR,-CO, SO NR, or NR,SO in which R and R, represent a hydrogen atom or a low alkyl residue, in which n l or 2 and Q stands for a possibly substituted heterocyclic residue, alkyl or benzene residue or a residue of .the formula in which D represents a possibly substituted benzene or naphthalene residue and E has the meaning which is stated in respect of A.

Preferentially, these azo dyestuffs comply with formula in which A, and E, each stands for a possibly N- acylated lhydroxy-8-aminonaphthalene-3,5- or -3,6- disulphonic acid residue combined with the azo group in 1 position or a- 2-amino 8 hydroxynaphthalene-6+ sulphonic acid residue combined with the azo-group in the 1 position which possibly possesses a possibly fursubstituted with chlorine, methyl, methoxy, sulphonic acid or carboxylic acid groups or for a residual naphther substituted residual alkyl or benzene on thenitr'ogen atom, M, stands for a residual benzene possibly substituted with halogen atoms, low alkyl or alkoxy groups, sulphonic acid, sulphonic acid amide, carboxylic acid or carboxylic acid amide groups, G, stands for a possibly substituted residual .alkyl or benzene and D, stands fora residual benzene possibly substituted with halogen atoms, low alkyl or alkoxy groups, sulphonic acid, sulphonic acid amide, carboxylic acid or carboxylic acid amide groups or a residual naphthalene possibly substituted with l or 2 sulphonic acid groups, in and n are each either 1 or 2 and X, Y and Z have the meaning as stated.

or furane residues. The residual alkyls Q or G, contain 1 to 18 carbon atoms as a rule. lnasfar as the residual Q represents a benzene or a heterocyclic residue, halogenes, alkoxy, alkyl, aryl, the residue of an aromatic carboxylic acid, e.g. of one of formulas nitro, sulphonic acid, sulphonic acid amide, carboxyl or carboxylic acid amide may be considered...

Accordingly, the azo dyestuffs of formulas (l and (2) thus represent either mohoordiazo-dyestuffs. lnasfar as m l in formula 2), they will be mono dyestuffs and if m 2, they will be diazo dyestuffs. The latter may be symmetrical as well as asymmetrical.

Preferentially, the diazo dyestuffs comply with formula in which X, Y, Z, n, A,, M,, D, and E, have the meaning as stated.

Diazo dyestuffs of the formula are of special interest. In same, A and E each stand for a possibly N-acylated residual l-hydroxy-8-amin onaphthalene-3,5- or -3,6-disulphonic acid or a 2- amin0:8-hydroxy-naphthalene6-sulphonic acid, which possibly'have a possibly further substituted benzene residue as substituent on thenitrogen atom, M stands for a residual benzene possibly substituted with chlorine, methyl, methoxy, sulphonic acid or carboxylic acid groups and D stands for a residual benzen possibly thalene d isulphonic acid and X, Y, Z and n have the meaning as stated.

Amongst these azo dyestuffs, those of formula Hogs lk'a I (5) must be specially mentioned, In same, R and R, each stand for a hydrogen atom or for a residual benzene possibly substituted with at leastone low alkyl, alkoxy or alkyl-carbonyl group, a phenoxy, dialkylaminocarbonyl, dialkylaminosulphonyl, trifluormethyl, sulphonic acid or carboxyl group or a halogen atom, R

stands for a hydrogen or a chlorine atom or a sulphonic in which X stands for O, S-, -CO- or acid group and D stands for a residual benzene possi- S O and Z for O-- or CONH and R D bly substituted with chlorine or sulphonic acid groups X Y d Z h th meaning as d, which is combined with th Other pa Of th dy Special interest is further claimed by diazo dyestuffs molecule in the 3 or 4 position to the azo group, or a 5 ith th follo f la 2,6-naphthalene-4,8-disulphonic acid residue, the re- H038 sidual benzene with which R is combined being com- I bined with X in the 3 or 4 position and X, Y, Z and'n -0H C0-co having the meaning as stated.

IYIH

s 0 H Diazo dyestuffs with good suitability comply with forl a mula:

Hogs v NH N=N HaC- CH:| I

SOHIS Uz Us 2 5 in which U stands for a hydrogen atom, a methyl or methoxy group, U for a hydrogen or halogen atom, a methyl, methoxy or phenoxy group, U for a chlorine, bromine or fluorene atom, a methyl, methoxy, acetyle,- trifluormethyl, sulphomethyl, sulphonic acid, carbox ylic acid, carboxylic acid-dimethylamide or sulphonic acid-diethylamide group, Y for a benzene, diphenyl, diphenylsulphonic or possibly sulphonic acid group containing residual benzene-dicarboxylic acid-di- (amidophenyl), X stands for O, S, SO v 10 CO- or NH- and Z stands for O-. S, o s

R D and n have the meaning as stated. 0H

Preferred from amongst these are azo dyestuffs of formula: N:NQCO HOaS NH 1 OH 8 Xl (Y1Z1)n SOBH HBC CHZ NII m Da-N=N H C CH 3 O a l HaC CH3 (.7) and above all, those of formula 7 4 H03? 7 s 03H -N=N l NH R:

DaN=N HzC 0H,

NH H C@CH= H30 Monoazo dyestuffs preferentially comply with formula in which X, Y, Z, n, A M and G have the meaning as stated.

In this connection, monoazo dyestuffs of formula A N=NM X--YZG are of special interest. In same, G stands for a residual benzenepossibly substituted with'halogen, low alkyl or alkoxy groups or nitro groups or a residual alkyl with l to l7 carbon atoms and X, Y, Z, A, and M have the meaning as stated. 7

Specially suitable monoazo dyestuffs comply with formula iioa? in which G represents a residual benzene or a residual alkyl with l to 12 carbon atoms and X, Y, Z, R and R have the meaning as stated, the residual benzene to which R is bound, being combined with X in the 3 or 4 position to the azo group.

Special mention must be made of monoazo dyestuffs of formula 0H X -Y1-Z 1-Ga I IH Ra l tz (16) i and particularly of those of formula in which X}, Y,, R,, R and G have the meaning as stated.

In the case of residues A and E in formula (I these may be, for instance, residues of the 1-hydroxy-7-amino-naphthalene-3,6-disulphonic acid, 1-hydroxy-8-amino-naphthalene-5,7-disulphonic acid, or. 1 l-hydroxy-8-aminc-naphthalene-3-sulphonic acid and above all I of the 2-amino-8-hydroxynaphthalene-o-sulphonic acid, l-hydroxy-8-amino-naphthalene-3,6-disulphonic acid or l-hydroxy-8-amino-naphthalene-4,6 disulphonic acid and/or of residues of amides of these acids which are possibly further substituted at the amino group. I

In the case 'of the sulphonic acid amides of the 2- "amino-8-hydroxy-naphthalene-6 sulphonic acid, these stance,

are, e.g. the

2-amino-naphthol-fi-sulphonic acid amide, 2-amino-8-naphthol-6-sulphonic acid-hexylamide, I 2-amino-8-naphthol-6-sulphonic acid-B- hydroxyethylamide or 2-amino-8-naphthol-6-sulphonic acid diethylamide. The amino group of this acid or of its amides may be substituted by an aromatic residue.

Examples of such substituents are the following: phenyl, 2-6-dimethylphenyl, 2- or 3- or 4- chlorophenyl, 2,3- or 3,4- or 3,5-dichlorophenyl, 2- or 4-fluorophenyl, 2-methyl- 4- or S-chlorophenyl, 3-trifluoromethylphenyl, 2,6-dimethoxydiphenyl, 2- or 4-phenylsulphonic acid, 2-methylphenyl-4-sulphonic acid, 4-chlorophenyl-3-sulphonic acid, 2- or 4'- acetylphenyl, 3- or 4-sulphomethylphenyl, 4- bromophenyl, 4-dimethylaminocarboxylphenyl, 4- phenylcarboxylic acid, I 4-phenylsulphonic aciddiethylamide, 4-chloro-3-methoxyphenyl,

4-phenoxyphenyl-3-sulphonic acid, 4-methoxyphenyl- 3-sulphonic acid. Further, alkyl residues, e.g. with l to 4 carbon atoms must be considered. .The sulphonic acid amides of the' l hydroxy-8- amino-naphthalene-3,6-disulphonic acid are for inthe .dimethylamides. The amino group of thisacid or of its 1-hydroxy-8-aminonaphthalene-3 ,6- -disulphonic acid-dimethylamide.s. The amino group of amides can be substituted by the acyl groups as stated for the l-hydroxy-8-amino-naphthalene-3 ,6- disulphonic acid.

Other sulphonic acids or sulphonic acid amides to be considered for A or E can also contain acyl residues of the stated type.

According to the production method of dyestuffs of formula (1 the residues M and D are for instance derived from acid chlorides, nitroaminobenzenes and/or naphthalenes, chloronitrobenzene-sulphonic acids or chloronitrobenzoic acids, e.g. the following acid chlorides:

mor p-nitrobenzoylchloride 2-chloro-4-nitrobenzoylchloride,

2-chloro-S-nitrobenzoylchloride, 4-chloro-2-nitrobenzoylchloride, 4-chloro-3-nitrobenzoylchloride, 5-chloro-2-nitrobenzoylchloride, 5-nitrobenzene-sulphochloride, 2-bromo-4-nitrobenzoic acid chloride,

2-chloro-5 -nitrobenzene-sulphochloride,

3-methoxy-4-nitrobenzoylchloride, Nitroamino-benzenes and/or naphthalenes 4-nitraniline,

4-nitraniline-3-sulphonic acid,

2-nitraniline-6-aminotoluene-4-sulphonic acid,

3-amino-2-nitroanisol-4-sulphonic acid, 3-chloro-4-nitraniline, l,4-phenylenediamine-3-sulphonic acid, l,3-phenylenediamine-6-sulphonic acid 5-amino-2-nitrobenzoic acid, 2-amino-4-nitrobenzoic acid, 2-amino-6-nitronaphthalene-4,8-disulphonic acid, 2-amino-7-nitronaphthalene-5-sulphonic acid, Chloro-nitro-benzene-sulphonic acids or chloronitrobenzoic acids:

2-chloro-4-nitrobenzene-sulphonic acid,

2-chloro-4-nitrobenzoic acid,

2-methoxy-4-nitrobenzoic acid.

The residue Y can be derived, for example, from bivalent phenols and/or thiophenols or diamines, e.g.:

hydroquinone,

4,4'-dihydroxydiphenyl,

4,4 '-dihydroxy diphenylsulphone,

4 ,4 -diamino-methyldiphenylamine,

benzidine,

hydroquinone-to-(4-amino-2-trifluoromethylphenyl) ether,

l ,3-dimercaptobenzene.

G is an aliphatic, aromatic or heterocyclic residue which derives from a carboxylic. or sulphonic acid. Such acids are for example:

Caproic acid,

caprilic acid,

lauric acid,

stearic acid,

benzoic acids which are substituted with one or more nitro, alkyl, alkoxy, alkylcarbonyl, acylamino groups or with halogen atoms,

diphenyl-4-carboxylic acid,

4-benzoylbenzoic acid,

4-phenyl-(4'-benzoylbenzoic acid),

phthalic acid, 7

phenylacetic acid,

thiophen-Z-carboxylic acid,

pyridine-2, -3- or -4-carboxylic acid.

' But G can also be combined with the A-N=)t NM'residue via an amino group or an oxygen atom and such a bond will for instance comply with formula AN=NMVG V representing a secondary or tertiary amino group or an oxygen atom.

Dyestuffs of formulas (l) to (1.9),. however, can be available not only in the form of their free acids, e;

' cordance with methods which are known. According to whether it is a question of symmetrical or assymmetrical diazo dyestuffs or of mono-azo dyestuffs, procedures vary.

One production process with particular reference to symmetrical azo dyestuffs of formula (I), in which Q represents a residue of the formula D-N=NE, is, for example, characterised by the fact that an aminonaphthol of formula and/or of formula I is made to react witha bi-diazo salt of formula N -MX(YZ)..-1 2*l[( /q) in which An stands for an anion of the value q and q stands for 1 or 2, A, M, X, Y, Z, D, E and n having the meaning as stated.

A particular production process for asymmetrical azo dyestufi's of formula (1) in which Q represents a residue of the formula --D--N-=NE and A possesses a substituted amino group in the 2- or 8-position, is, for instance, characterised by the fact that an aminonaphthol of formula is made to react with a diazo salt of formula q [A-N=N- M-X(YZ),, ,DN, ][An"] in which An represents a q-valent anion and q stands for l or 2, A, 'M, X, Y, Z, D, E and it having the meaning as stated, with the limitation given'above in respect of A.

A production process for azo dyestuffs of formula 1 in which Q represents a possibly substituted heterocyclic residue, alkyl or benzene residue, is, forinstance, characterised by the fact that an aminonaphthol of formula is being made to react, An" in same representing a q-valent anion and q standing for'l or '2, A, M, X, Y, Z, O and n retaining their stated meaning with the limitation mentioned above in respect of Q.

A further production process for azo dyestuffs of formula (1) in which Q represents a possibly substituted heterocyclic residue, alkyl or benzene residue, Z stands for NR,- and X inasfar as n 1 stands for NR- and in which R and R have the stated meaning, is characterised by the fact that a compound of the formula is made to react with an acid halogenide and/or dicarboxylic acid anhydride of formula in which A, M, X, Y, Z, Q or n have the stated meaning with the. limitation stated above in respect of Q, X and An appropriate manner of obtaining, above all, symmetrical diazo dyestuffs in accordance with the invention, is for instance the following: Production of diin which M, X, Y, Z and n have the stated meaning. These diamines are to be coupled to the relative aminophtholsulphonic acid.

Diamines of formula ('24) are partly known products.

' cro, I O0- OH3 $001, 00 COOH N02 s -c 0-6-0 0 01 N02 mNONm Further, certain diamines of formula (24) can be produced in accordance with the following scheme of formulas:

Asymmetrical diazo dyestuffs are appropriately obtained according to the stated procedures by coupling a diazotisednitroamine of formula at the amino group. I Subsequently, the nitro group is reduced and coupled with an amininaphthol of formula (18b) For example, mono-azo dyestufis. are obtained by diazotising an amine of formula I H NM-X---.(Y--Z),, ,G

in which M, X, Y, 2, G and n have the stated meaning, coupling the diazo compoundwith aminonaphthol of formula (18a) and possibly further reactions on G I l No,

Ale-Quin such as reduction and subsequent acylising of a possibly available nitro group on G,.

On the other hand, it is also possible to acylise first a diamine of formula in which X and Y have the stated meaning and M, stands for a residual benzene which carries a sulphonic acid group in the ortho-position to the amino group, into a compound of formula in which M,, X, Y and G have the stated meaning and to couple same subsequently, after diazotising the sccondamino group, with an aminonaphthol of formula (18a) and/or (18b).

The dyestuffs of formula (1 can be applied for various purposes, e .g. in photographic materials, and, in this respect and with particular advantage, as image dyes for the silvercolour bleaching process. Accordingly and in the usual, initself already known manner, valuable photographic materials can be produced which on one coating carrier contain at least one layer with a dyestuff of formula (1).

In particular, these dyestuffs can be present in a multi-layer material, one coating layer of which contains a layer dyed with a greenish-blue dyestuff, selectively red-sensitive, above it a layer dyed purple with a dyestuff of formula (1), selectively green-sensitive and finally a layer dyed with a yellow dyestuff, which is sensitive to blue. Dyestuffs of formula (1 can also be deposited, however, in an auxiliary layer or, particularly, in a layer adjacent to the light-sensitive layer.

Dyestuffs of formula (1) are diffusion-proof, have a good solubility in water, are resistant to calcium ions and are good to highly fast to light. Dyestuffs in accordance with the invention also offer manifold facilities to vary spectral characteristics and excel by their extraordinarily pure colour shades and high colour strength.

The extremely favourable course of the spectral absorption graph permits the combination of these purple dyestuffswith one matching yellow and bluish-green dyestuff each. At the same time, grey shades which appear to be neutral to the eye, are obtained throughout e.g., in baryting.

EMBODIMENTS Example 1 l .l 2 -chloro-5 '-nitrobenzoyl-4-methylbenzene 150 grs of 2-chloro-5-nitrobenzoylchloride are dissolved in 300 ml of toluene and are mixed in portions with lOO grs of aluminum chloride in such a manner that the toluene keeps on boiling. Subsequently, heating is continued in a steam bath for a further 30 minutes, the solution'is then mixed with 1 kg of ice and 100 ml of 37 HCl and the excess toluene is distilled off with steam. The residue is crystallised from 6 litres of ethanol.

Yield: I grs Melting point 979 C, white crystals. 1.2 2'-chloro-5 '-nitrobenzoylbenzene-4-carboxylic acid chloride 100 grs of 2-chloro5-nitrobenzoyl-4'-methylbenzene are heated with 700 grs of glacial acetic acid to C and 82.5 grs of chrome trioxide are put in in such a manner that the temperature remains at 80 to C without further heat being provided. Subsequently, the temperature is raised to 1 10 C and is held there for IS minutes. The mixture is then left to cool down to 8 C, the precipitated crystals are suctioned off, ml of glacial acetic acid are used for washing, this being continued with water until same discharges colourless. White crystals are obtained which are pressed off well and are re-crystallised from 700 cc of glacial acetic acid. 48 grs of the 2-chloro-5-nitrobenzoyl-benzene- 4-carboxylic acid thus obtained are boiled for 12 hours with ml of thionyl chloride, the excess thionyl chloride is suctioned off into a vacuum on the steam bath, the residue is mixed with 50 ml of toluene and 5 grs of active carbon, suctioned off hot, the filtrate is mixed with I00 ml of petrol ether, cooled to 0 C, the precipitated crystals are filtered off and are washed with petrol ether.

Yield 48 grs Melting point 96 C 1.3 l-( 2'-chloro-5 '-nitrobenzoylbenzene-)-4-carboxylic acid-4' -amino-phenylamide-3 -sulphonic acid SOaH 4.2 grs of p-phenylene-diamine sulphonic acid are dissolved in 70 ml of water at pH 8.5 and 80 C and are mixed with a solution of 6.4 grs of the cloride from 1.2 in 50 ml of acetone, this taking place slowly within a period of 30 minutes, the temperature being kept to 80 C and the pH value to 8.5 by letting l-n-sodium carbonate solution drip in. The pH value is then brought to 0.5 by adding 37 l-lCl, the solution is then suctioned off and the residue is washed three times on the filter with 100 ml of water and dried in the vacuum at 80 C. After recrystalising from 50 ml of 90 percent pyridine, 7 grs of crystals of the pyridine salt of the compound of formula (lOlc) is obtained.

NHr SOaH 20 grs of crystallised iron-II sulphate are dissolved in 40 ml of water, mixed with 40 grs of 24 percent ammonia, stirred for 5 minutes on the steam bath, mixed with 5.4 grs of the substance of formula (1010), heated for 15 minutes on the steam bath whilst stirring, suctioned off hot and washed three times with 20 ml of water in each case. The filtrate is brought to pH 0.5 with 37 HCl, suctioned off and washed with water. The filter residue dried in a vacuum at 80 C is dissolved in 20 ml of dimethylformamide, suctioned off and the filtrate is mixed with 50 ml of glacial acetic acid. After cooling the precipitate to 20 C, it is suctioned off, washed with 50 ml of glacial acetic acid and dried in a vacuum at 80 C. After re-crystallising from 30 ml of formic acid, 3 grs of crystals of the salt of the compound of formula (101d) are obtained.

Melting point above 300 C.

1.5 Dyestuff of formula (101) 1 g of the product of formula (101d) is dissolved in 3 ml of 96 percent sulphuric acid and mixed at 5 C with 0.15 grs of sodium nitrite. Stirring is carried on for 2 hours at between and C. This is then mixed with 20 grs of ice, the temperature not being let to rise above 5 C. Subsequently, itis mixed with 50 ml of water. By adding crystallised sodium acetate, it is set to Congo neutral and the excess nitrous acid is removed with sulphamic acid. Then, a solution of 1.6 grs of 2- (2 ',6-dime'thylphenyl )-'amino-8-naphthol 6-sulphonic acid sodium in 20 ml of water is added all at once. The coupling into the diazo dyestuff occurs immediately. Stirring is carried on for 1 hour at room temperature and the mixture is then slowly heated to 80 C. It is then mixed with 10 grs of sodium chloride, cooled to 10 C, suctioned off and washed with 5 percent sodium chloride solution afterwards.

1.2 grs of dyestuff of formula (101 as per Table I will be obtained.

If the equivalent quantity of 1-(2-methoxy-5- aminobenzoyl-benzene)-4-carboxylic acid-4"- aminophenylamide-J"-sulphonic acid is used instead of the chlorine compound of formula (101d), a similar dyestuff will be obtained.

Example 2 2. 1 2 -chloro-4 '-nitrobenzoyl-4-methylbenzene 2 '-chloro-4 '-nitrobenzoylbenzene 4-carboxylic is produced analogously to the details given in 1.4.

Melting point 81.0 C.

181-(2 '-chloro-4 '-nitrobenzoylbenzene )-4-carboxylic acid-4- aminophenylamide-3"-sulphonic acid 12.2 grs of p-phenylenediamine sulphonic acid are dissolved in 200 ml of water at C and a pH value of 8,5 and whilst stirring, one lets a solution of 19 grs of acid chloride of formula l02b) drip in within 1 hour at 80 C, the pH value being kept at 8.5 by the addition of l-n-sodiu'm carbonate solution. Subsequently, stirring is continued for one-half hour at 80 C, then one suctions off hot and after-washes with 400 ml of water. The filter cake is well pressed and is crystallised without drying from 200 ml of pyridine. After another re-crystallisation from dimethylformamide, 21 grs of yellow-coloured crystals of the sodium salt of the compound of formula (1026) are obtained.

Melting point above 300 C.

2.4 18 l -(2-chloro-4 -aminobenzoylbenzene )-4-carboxylic acid-4"-aminophenylamide-3 '-sulphonic acid I is produced analogously to the details given in 1.4.

Melting point above 300C. 2.5 The production of the dyestufi of formula (102) of Table I occurs analogously to the details given in 1.5.

Example 3 3. l 4'-nitrobenzoyl-4-me'thylbenzene is produced analogously to the details given in 1.2

Melting point: C. I

3.3 1-(4'-nitrobenzoylbenzene)-4-carboxylic acid- 3' -aminophenylamide-4"-sulphonic acid 28 grs of 1,3-phenylenediamine sulphonic acid are dissolved in 300 ml of water at 80 C and pH 8.5. Within 1 hour, one lets a solution of 36 grs of the chloride of formula (l03b) drip in at between 75 and 80 C, the pH value being kept at 8.5 by the addition of l-nsodium carbonate solution. The conversion product precipitates. When all the chloride has been put in, the mixture is heated for another one-half hour to 80 C, suctioned off, washed with a little water and dried in a vacuum at 80 C. After r'e-crystallising from 300 ml of dimethylformamide, 24 grs of yellowish crystals of the sodium salt of the compound of formula (l03c) with a melting point above 300 C are obtained.

3.4 l-(4-aminobenzoylbenzene)-4-carb0xylic acid- 3"-aminophenylamide-4"-sulphonic acid I NHz 15 grs of the product from 3.3 are dissolved in 1 litre of water, at 80 C, with 5 ml of IO-n-NaOI-l and are then added within half an hour to a mixture of 15 grs of iron, 25 cc of 37 HCl and 25 ml ofwater which has been heated on the steam bath for 6 hours, being stirred all the time. Stirring is continued on the steam bath for 3 hours, the pH is set to 9 by adding sodium carbonate, it is then suctiond off hot and the residue is washed four times, each time with 50 ml of hot water. It is then cooled to between 2 and 3 C, suctioned off and the residue is washed out with 20 ml of iced water and dried in a vacuum at 80 C. It is then dissolved'in 70 ml of pyridine and 120 ml of water, boiled with 2 grs of carbon, suctioned off hot, the mother lye is then mixed with 400 ml of ethanol, cooled to 3 C, suctioned off and washed with ethanol.

Melting point: above 300 C Yield 7 grs of the product of formula (103d) 3.5 Production of the dyestuff of formula (103) l g of the production of formula (103d) is dissolved in ml of 96 sulphuric acid at 40 C, cooled to 5 C and mixed with 0.4 grs of sodium nitrite. It is stirred at to C for 2 hours. 20 grs of ice are added, so that the temperature does not rise above 5 C, 50 ml of water are used for dilution, the mixture is thenmade Congo-neutral by the addition of sodium acetate and the excess ntrous acid is removed with sulfamic acid. For this purpose, a solution of 2.6 grs of 2-(2, 6- dimethylphenyl)-amino-8-hydroxy-naphthalene-6- sulphonic acid sodium is produced with 26 ml of water. The coupling into' the-diazo dyestuff occurs at once. Stirring is carried on for one hour at room temperature and the mixture is then heated to 80 C within half an hour, is mixed with 8 grs of sodium chloride and cooled to 10 C. It is then suctioned off and washed with 50 ml of 5 percent sodium chloride solution. 1.2 grms of dyestuff of formula (103) as per Table I are obtained.

Example 4 4.1 Hydroquinone-4',4"-di(nitrophenyl ether)-2',2- disulphonic acid ether)- 50 grs of iron, 100 ml of water and 50 ml of 37 HCl are heated for 6 hours whilst being stirred on the steam bath and are then mixed with 56 grs of the production of formula (104a), dissolved in 300 ml of water at the temperature of C. Stirring is continued at C for 2 hours, the mixture is then set to pH 9 by the addition of sodium carbonate, is suctioned off hot and the residue is washed twice, each time with 50 ml of water. The filtrate is set to pH 0.5 with 37 HCl, is cooled to 10 C, the precipitate is suctioned off and is washed twice,

once to a solution of 4 grs of 2-(2, 6'-dimethyl'- phenyl)-amino-8-hydroxynaphthalene-6-sulphonic acid sodium in 30 ml of water and is set at pH 3 by the addition of sodium acetate. It is stirred for one hour at room temperature and the temperature is then raised to 80 C within 1 hour. It is then mixed with 5 grs of sodium chloride and cooled to l0 C. The precipated dyestuff is suctioned ofi and is washed with 30 ml of 10 sodium chloride solution. The dyestuff is then dissolved in 50 ml of water at 80 C, filtered, the filtrate ismixed with 8 grs of sodium chloride and cooled to 10 C. The precipitated dyestuff is suctioned off and is then washed with 20 ml of 10 percent sodium chloride solution and subsequently with 10 ml of 5 percent sodium chloride solution.

Yield l.'l grs of dyestuff of formula (104) as per Table I.

Example 5 and 15 ml of 37 HCl. This diazo solution is thenadded to a solution of 6 grs of l-benzoylamino-8- naphthol-3,6-disulphonic acid, 20 ml of 24 percent ammonia, 5 ml of pyridine and 50 grs of ice. Stirring is carried on for one-half hour, the temperature rising to between 15 and 20 C. It is then heated to 80 C and kept at this temperature for one hour. It is mixed with 10 grs of sodium chloride, cooled to 10 C, the precipitated dyestuff is suctioned off and washed with 50 ml of a 10 percent sodium chloride solution. The dyestuff is dissolved in 200 ml of water at 80 C, filtered, the filtrate is mixed with 200 cc of ethanol, cooled to 10 C, the precipitated dyestuff is filtered and is after-washed with 50 cc of 50 percent ethanol.

Yield 1.6 grs of dyestuff of formula (105) as per Table II.

Example 6 grs of 4'4'-diamino-diphenylsulphon are dissoled in 100 ml of water and 20 ml of 37 HCl and are tetrazotised in the usual manner with 6 ml of 4-n-sodium nitrite. The solution is then added at room temperature to a solution of 15 grs of 2-amino-8-naphthol-6- sulphonic acid in 200 ml of water and 8 grs of sodium carbonate. Stirring is then carried on for one-half hour at room temperature and subsequently for one-half at 80 C, it is then mixed with 30 grs of sodium chloride, cooled to C, suctioned off, washed with 100 ml of 10 percent sodium chloride solution and dried in a vacuum at 80 C. The residue is then dissolved in 100 ml of dimethyl formamide at 100 C, is filtered and the filtrate is precipitated with 1 litre of acetone.

Yield 7 grs of the dyestuff of formula (107) of Table III.

Example 7 7. l 182-/4-( 2 '-chloro-5 '-nitrobenzoyl)-benzoylamino/- 6-nitro-naphthalene 4fiisulphonic acid 7.2. 631.1 .m .ai 2.

NH o@ o Q3 N O a N 0 2 4.24 grs of 2-amino-6-nitro-naphthalene-4,8-

disulphonic acid are dissolved in 40 ml of nmethylpyrrolidine at 130 C and are then mixed with 100 ml of pyridine. At 100 C, a solution of 4 grs of the production of formula (101b) is added, cooled to 20 C and the production of condensation is precipitated with 250 ml of acetone. It is suctioned off, washed with 50 ml of acetone and dried in a vacuum at 80 C. This product is dissolved in 120 ml of water with the addition of some ammonia, is suctioned off hot and the fil- SOBH Cl -NHC 00-0 0Q NH NH:

6 grs of the production of formula (107a) are dissolved in 150 ml of water and 10 ml of 24 percent ammonia, are added at 60 C to a mixture of 40 grs of Fe 80 7 B 0, 50 ml of water and 50 ml of 24 ammonia, heated to the boil, suctioned off hot, mixed with 20 ml of hot water, the filtrate is set to pH 0.5 with 37 HCl, cooled, suctioned off, washed with water anddried in a vacuum at 80 C. v

Yield 4.6 grs of the product of formula 12%). 7.3 Production of the dyestuff of formula (129) as per Table I is carried out analogously to' 1.5.

Example 8 8.1 5 grs of diamino-phenyl sulphon are tetrazotised as per 6.1 and coupled, analogously to Example 6, with 18 grs of 2,2',6-dimethylphenylamino-8-naphthol-6- sulphonic acid sodium. 1 1.2 grs of dyestuff of formula (108) as per Table I will be obtained.

Example 9 9. l Hydroquinone-Z',2"-di-(nitrophenyl ether)-4 4 "-disulphonic acid 5.5 grs of hydroquinone, l g of sodium sulphite and 4 grs of sodium hydroxide, dissolved in ml of water, are added to a solution of 28 grs of 4-chloro-3- nitrobenzene sulphonic acid potassium in 200 ml of water and are heated for 6 hours to 95 C whilst being stirred. The solution is then mixed with 90 grs of sodium chloride and cooled to 5 C. it is suctioned off and after-washed with a 25 percent sodium chloride solution and is then dried in a vacuum at C. It is then dissolved in 30 ml of hot dimethyl formamide, suctioned ofi hot from the undissolved sodium chloride and precipitated from the filtrate with acetone to supply the di-sodium salt. a I

Yield 16 grs of the sodium salt of the product of formula (109a). 9.2 Hydroquinone-2',2"-di-(aminophenyl ether)- 4',4' '-disulphonic acid 2.5 grs of iron, 1.5 ml of 27 HCl and so mlof water are stirred for 3 hours on the steam bath, 2.5 grs of the substance of formula (109a) are added and stirring continues for a further 4 hours. Then the pH value is set to 9 with sodium carbonate, the solutionis suctioned off hot and is after-washed with 20 mi of hot water. The filtrate is set to pH 3 with HCI, cooled to 5 C, the precipitated crystals are suctioned off and are recrystallised from water. I

Yield 1.2 grs of the product of formula (l09b) 9.3 Production of dyestuff of formula (109) of Table 1 is carried out analogously to the description in 4.3.

Example 10 acid sodium in 100 ml of water and 10 ml of pyridine, the pH value being kept at 9 by letting ammonia drip 4,4-di-(4",4"-nitrophenoxyphenyl)-sulphon-2",2"- in and the temperature being kept to between and disulphonic acid C. Stirring is continued for 2 hours at room tempera- 0 H 0 H (110a) 75 grs of4,4-dihydroxy-diphenylsulphon, 1200 ml of ture, same is then rasied to 60 C within 30 minutes. N-methylpyrrolidine, 60 ml of 10 n-sodium hydroxide- After cooling to 20C, the solution is mixed with 30 grs solution, 198 grs of 2-chloro-5-nitrobenzene-sulphonic of sodium chloride, suctioned off, washed with a 30 acid sodium (78 percent) are boiled for 1% hours whilsodium chloride solution until same discharges colourst stirred, 600 m1 of N-methylpyrrolidine are distilled less and dried in a vacuum at 60 C. The dry dyestuff off and the residue is stirred into 3 litres of diethyl is dissolved in 50 ml of dimethyl forrnamide at 110 C,

ether. The ether is poured off the separated oil and the filtered off from the undissolved salt and precipitated Oil iS boiled for 10 minutes with 1 litre 0f isopropanol, from the mother lye with 200 ml of dioxane, It is then cooled to C, the precipitated crystals are suctioned ti d ff, after-washed th e tim ith 20 1 of off, washed with 500 ml of isopropanol and dried in a di d d i d i a vacuum t 100 C,

vacuum at 80 C. After re-crystallisation from 500 ml Yi ld 9 2 grs f d t ff f fo ula (11]) as per of glacial acetic acid and 50 grs of carbon, 72 grs of 00- 20 Table n lourless crystals of formula (110a) are obtained. r r

I O 2 Example 12 l84,4di-(4",4"-aminophenoxyphenyl)-sulphon- 0.37 grs 0t diamino-disulphonic acid of formula 2",2"'-di-sulphonic acid (1 10b) are dissolved in 10 ml of water and 3 drops of 03H SOaH (nob) W U n V 6 grs of iron, 6 ml of 37 HCl and 100 ml of water a 10-n-sodium hydroxide solution, the solution being are heated whilst being stirred on the steam bath for 4 mixed with 0.5 ml of 4n-sodium nitrite solution. This hours and 6 grs of the product of formula (110a) are solution is added all at once to a mixture of 100 ml of then added. Stirring on th steam bath is continued for water, 50 grs of ice and 3 ml of 37 HCl.

4 hours, pH 9 is then set by the addition of sodium Car- 09 grs of N-benzoyl-l-hydroxy-8-amin0- bonate, the mixture is suctioned off hot, the filtrate is naphthalene-3,6-disulphonic acid (75 percent) are disset to pH 1 with HCl, is cooled to 20 C, the precipitate solved in 10 ml of water, 10 ml of 24 percent ammonia is suctioned off, washed after with 100 ml of water and d 4 1 f idi Th nl i i poured 50 ml of ethanol and d ed i a Vacuum at into this sulphonic acid solution at 2 C and is stirred Yield 3 g of the compound of formula for 1 hour at room temperature. It is then heated to 80 3 Production of the dyestuff of formula C. At this temperature, it isthenmixed with 35 grs of 0.74 grs of the substance of formula ll0b) are dis- Potassium acetate cooled to 0 C, suctioned ff solved in 15 ml of water and 0.1 grs of sodium hydroxwashed with 50 ml f 20 percent potassium acetate Q. ide. 0.175 grs of sodium nitrite is then added. This soluiution, then with 20 m] of ethanol and drued in a tion is slowly poured into a mixture of 300 ml of water, uum at The dry dyestuff is dissolved in 15 m1 of 100 gl'S Of ice and 10 ml Of 37 HC]. A clear 116K310 dimethyl fonnamide at 0 C, suctioned off and the solutlon be f qmother lye is precipitated with ml of dioxane. The grs of ,6 ?Y precipitated dyestuff is suctioned ofi, washed with 20 ynapthalene-6 sulphonlc acid sodium are dlssolvedan ml of dioxane and dried in a vacuum at The and the tetra Pmmd stuff of formula(ll2) as per Table 11 will be obtained. Stirr ng [5 carried on at room temperature for 2 h r A V the solution is thenheated to C, 300 ml of water 50 Example 13 being distilled off. The residual dyestuff solution is H pi-b o f 'fifiy' g'iufibf formula fll il) as mixed with of potassufn cooled m per Table 111 is carried out analogously to the descrip- C, the precipitated dyestuff ls suctioned off, washed tion in Example first with 100 ml of 20 percent potassium acetate solu- A tion and then with 50 ml of alcohol, boiled for 10 min- 55 l Example 14 utes with 30 ml of methanol, suctioned off hot and 14.1 4,4'-di-(4,4'"-nitrophenoxy)-diphenyl-3",3"'-

washed with 30 ml of methanol. disulphonic acid 7 S0313 03H (1148) 0.6 grs of dyestuff of formula as per Table Ill 1.8 5 grs of 4,4'-dihydroxyphenyl are dissolved in 10 will be obtained' ml of N-methyl purrolidine, mixed with 2 ml of 10-n- 5 sodium hydroxide solution and added to a solution of Examplre 6.65 grs of 2-chloro-5-nitrobenzene-sulphonic acid so- 5 g 0f p y p are tetraZO- dium in 20 ml of N-methylpyrrolidine. The solution is tised as per Example 6 and mixed into a SOhlt n 0f 21 boiled for 18 hours and stirred into 300 ml of diethyl g 0f y Q- P isulphonic ether. The ether is decanted and the residue is boiled disulphonic acid 'soarr 14.5 grs of iron powder, 15 ml of 37 HCl and 30 ml of water are boiled for 1 hour. Then, 45 ml of water and within 30 minutes, 16 grs of the compound of formula (114a) are added. This is boiled for 3 hours, set to pH 9 with sodium carbinate, suctioned off the iron oxide, the filtrate is set to pH 0.5 with 37 HCl. The precipitated amine is suctioned off, washed with 200 ml of water and dried in a vacuum at 100 C.

Yield 8 grs of the compound of formula (ll4b) 14.3 0.53 grs of the compound from 14.2 are dissolved in 3 ml of 94 percent sulphuric acid and mixed with 0.2 grs of sodium nitrite at 2 C whilst stirring. Stirring continues for 3 hours at 2 C and the solution is then applied to 50 grs of ice. A clear soltuion of the tetrazo compound is created in which the excess nitrous acid is destroyed by the addition of sulfamic acid. 1.5 grs of 1(4-glutaroylamino-benzoylamino)-8-naphtho1- 3,6-disulphonic acid are dissolved in 20 ml ofwater, 15 ml of 24 percent ammonia and 3 m1 of pyridine. The tetrazo solution produced above is poured into this solution at 2 C, this is then stirred for 1 hour at room temperature and then heated to 60 C within minutes. 20 grs of potassium acetate is then added, cooled to 10 C, the precipitated dyestuff is suctioned off, washed out with 20 ml of 20 percent potassium acetate soat 90 C. The dry dyestuff is dissolved in 50 ml of dimethylformamide at 1 10 C, filtered, precipitated with 150 ml of isopropanol from the filtrate, suctioned off and washed with 50 ml of isopropanol.

Yield 4.6 grs of dyestuff of formula (116) as per Table l.

' Example 17 The production of the dyestuff of formula (117) as per Table 1 takes place analogously to Example 1.

Example '18 2 grs of 4,4-diamino-diphenyl ether :are being tetrazotised as stated in Example 16.

11.76 grs of 1-N-benzoylamino-8-naphthol-3,6- disulphonic acid sodium are dissolved in 50 ml of hot water, cooled to room temperature, set to pH 8 with 5 ml of pyridine and ammonia and the tetrazo solution is then slowly added, the pH value kept to 8 by the addition'of ammonia. Stirring at room'tempe'rature for 1 hour, the solution is then heated to 60 C'within 30 minutes, is mixed with 10 grs of sodium chloride, cooled to 10 C. The precipitated dyestuff is suctioned off, washed with 5 percent sodium chloride solution, until same discharges almost colourless and dried in a vacuum at 80 C.

Yield 6.3 grs of dyestufi' of formula (118) as per Table 11.

Example 19 Production of the dyestuff of formula (119) as per' Table 1 takes place analogously to Example 1.

Example 15 The production of the dyestuff of formula (115) as per Table 11 is carried out analogously to Example 14 from l-N-benzoylamino-8-naphthol-3 ,6-disulphonic acid.

Example 16 2 grs of 4,4'-diamino-diphenyl ether is dissolved in 40 ml of water and 7 ml of 37 HCl and 20 grs of ice and 1.46 grs of sodium nitrite are added.

9.1 grs of 2-(2,6'-dimethylpheny1amino)-8- naphthol-fi-sulphonic acid sodium are dissolved in 50 ml of water, cooled to 5 C and poured into the tetrazo solution above. Stirring carries on for 3 hours at room temperature, the precipitated dyestufi is then suctioned off, washed with 20 ml of water and dried in a vacuum 300 ml of 1,2-dichlorobenzene, grs of diphenyl and 220 grs of 4-chloro-3-nitrobenzoylchl0ride are mixedwith 220 gm of aluminium chloride and heated to 130 C in minutes. The mixture is then poured over 3 kilos of ice and ml of 30 HCl and the dichlorobenzene is distilled off with steam. The residue is suctioned off and is boiled for 5 minutes with 2 litres of ethanol. A white powder is obtained which is'crystallised from 400 ml of dimethyl formamide. Yield 224 gm of the compound of formula (a) with a melting point of 214 C. 20.2 4,4'-di-(m-amino-pwhlorobenzoyl)-diphenyl 15H. NH;

(12Gb) A V 10 grs 6f the product of formula( 120a) are hea'ted with 10 grs of tin chips and '80 m1 of 37 percent l-lCl. As soon as the tin is dissolved, water (1 10 ml) is mixed in, the precipitated crystals are suctioned off and re-crystallisation takes place from dimethylformamide.

Yield 7 grs Melting point 283 C.

20.3 Production of the dyestuff of formula (120) 1.65 grs .of the product of formula (120b) are dissolved in 15 ml of 94 percent sulphuric acid, 0.8 grs sodium nitrite is added and the whole is stirred for 4 minutes at between and 2 C. Subsequently, the mixture is diluted to 100 ml with iced water.

2.8 grs of 2-(2'6-dimethylphenylamino)-8-naphthol- 6-sulphonic acid sodium are dissolved in 80 ml of water and the diazo solution is added all in one at 10 C. Stirring continues at room tempera-ture for 2 hours, the precipitated dyestuff is then suctioned off and washed with 200 ml of 2.5 percent sodium chloride solution, to which has been added 5 ml of a 24 percent ammonia, and subsequently with 200 ml ofa 1.25 percent sodium chloride solution. After drying, the dyestuff is dissolved in 50 ml of dimethyl formamide, to which have been added 5 ml of pyridine, filtered, precipitated from the filtrate with 200 ml of isopropnaol, suctioned off and dried at 100 C. The dyestuff of formula (120) as per Table 1 will be obtained.

Example 21 Production of the dystuff of formula (121) as per Table 11 takes place analogously to Example 20.

Example 22 22.1 1 ,3-di-(p-nitrophenylmercapto )-benzene-mdisulphonic acid NH: S

11 grs of iron powder, 15 ml of 37 HCl and 50 ml of water are kept at 95 C for 1 hour whilst being stirred and then, a solution of l 1 grs of the product of formula (122a), dissolved in 100 ml of water, is added within 30 minutes. The mixture is heated to 95 C for 2 hours, is set to pH 9 with sodium carbonate, suctioned 011' and after-washed twice with ml of water each time,

which'has a temperature of 80 C. The filtrate is set to pH 0.5 with 37 HCl, is cooled in ice for 4 hours, the precipitated crystals are suctioned off, washed with 100 ml of water and dried in a vacuum at 80 C. The welldried product is heated with 50 m1 of dimethyl formamide and 5 ml of pyridine to 100 C for 10 minutes, stirring continuing, is then suctioned off hot and wash ed with 50 ml of dimethyl formamide and subsequently with 100 ml of methanol after which it is dried. It is then dissolved in 50 ml of boiling water, 2 ml of 24 percent ammonia being added, 1 g of animal charcoal is added, suctioned off hot, the filtrate is mixed with 2 grs of ammonia chloride and cooled to 2 C. The precipitated colourless crystals are suctioned off, 3 times washed with 10 ml of water, then with 20 ml of methanol and dried in a vacuum at C.

Yield 7.4 grs of the product of formula (122b). 22.3 Production of the dyestuff of formula (122) 0.5 grs of the product of formula (122b) are dissolved in 10 ml of water with the'addition of 0:17 sodium netrite and is then slowly added to a mixture of 20 grs of ice and 2 ml of 37 percent l-lCl. Stirring continues for 2 hours at 5 C, the precipitated tetrazo compound is then suctioned off, washed three times with 2 ml of iced water and is then stirred into a solution of l g of 2-(2,6-dimethylamino)-8-naphthol-6-sulphonicx acid in 15 ml of water and 1 ml of formic acid. Stirring continues for 1 hour at room temperature, after which the mixture is heated to 60 C. After cooling to 10 C, it is mixed with 40 ml of 20 percent alcoholic potassium acetate solution, suctioned off, washed with 100 ml of a mixture of 30 ml of water and 60 ml of 20 percent alcoholic potassium acetate solution and then with 100 ml of ethanol. The dyestuff is dried in a vacuum at C.

Yield 0.96 grs of the potassium salt of the dyestuff of formula (122) as per Table l.

Example 23 23 .1 acid 37.6 grs of p-phenylanediaminesulphonic acid, 66 grs of 2-chloro-5-nitro-benzene sulphonic acid sodium, 33.6 grs of sodium bicarbonate and 300 ml of water are boiled for 12 hours whilst stirring, are then mixed with 60 grs of sodium chloride and cooled to 10 C. The .precipitated crystals are suctioned off, washed with ml of 25 percent sodium chloride solution and dried at 100 C in a vacuum. This product is dissolved in ml of dimethyl formamide, filtered off from the undissolved sodium chloride, the filtrate is mixed with 50 ml of 20 percent alcoholic potassium acetate solution and 1 litre of ethanol, cooled to 10C, the precipitated yellow potassium salt is suctioned off and washed out with 100 ml of ethanol.

Yield 71 grs of the potassium salt of the compound of formula (123a) 23.2 Production of the nitroazo dyestuff of formula SOzH SOaH SOaII HOaS hours at 3 C and the mixture is then diluted to 1 litre with iced water. The excess of sodium nitrite is then removed with sulphamic acid. This diazo compound is left to flow into a solution of 9 grs of l-benzoyl-amino- 8-naphthol-3,6-disulphonic acid in 40 ml of water, 25 ml of 27 percent ammonia and 12 ml of pyridine at between 3 and C within 1 hour, it being stirred for 2 3.6 grs of the nitroazodyestuff of formula l23b) are dissolved in 70ml of water and the solution is set to 10.2 with n sodium hydrixude solution. ltis then heated to 40 C and a solution of 2.5 grs of Na S.9H O in 10 ml of water is added. The pH value rises to 12.5.

When the reduction is terminated; 2 grs of sodium bicarbonate are added, filtration is carried out and the filtrate is evaporated in a vacuum to 40.ml, is mixed with ml of ethanol, cooled to 20 C and suctioned off, the filtrate is then mixed with 90 ml of 20 percent alcoholic potassium acetate solution, is cooled to 0 C,

' the precipitated dyestuff is suctioned off and washed out on the filter with 50 ml of ethanol.

Yield 2.1 grs of potassium salt of the dyestuff of formula (l23c). 23.4 Production of the dyestuff of formula 123) 2 grs of aminoazo dyestuff of formula (123a) are mixed into 20 ml of dimethyl formamide, 2 ml of pyridine is added and the whole is mixed at 110 C with a solution of 0.8 grs of iso-phthalic acid dichloride in 3 ml of acetone. It is kept at 120 C for another 15 minutes and the reactive solution is then poured into 100 m1 of iso-propanol. It is suctioned off and the "dyestuff is after-washed with 50 ml of iso propanol. 1

Yield 1.4 grs of the potassium salt of the dyestuff of formula (123) as per Table 11.

, Example 24 I 4.7 grs of the nitro-amino compound of formula (123a) are dissolved in ml of water, mixed with 5 ml of 4n-sodium nitrite solution'and left to drip into a mixture of 100 grs of ice and 5 ml of 37 l-lCl within 1 hour. Stirring is continued for another hour at between 3 and 5 C and then, the excess nitrous acid is removed with a ln-sulphamic acid solution. A pH value of 2 is then produced with sodium acetate and a solution of 4.5 grs of 2-(2,6.-dimethylphenylamino)-8snaphtho1- 6-sulphonic acid is added all at once. Stirring continues for 4 hours at room temperature and for 1 hour at 50 C, 10 grs of infusion earth is added, it is then suctioned off and after-washed with 50 ml of water. The filtrate is mixed with 50 grs of sodium chloride and cooled to 5 C, suctioned off, washed with a 20 percent sodium chloride solution and dried in a vacuum at 100 C.

- Yield 13 grs; This product is dissolved in 100 ml of dimethyl sulphonamide, suctioned off the undissolved sodium chloride and the dyestuff is precipitated from the filtrate with 200 ml of isopropanol.

Yield 5.7 grs of the sodium slat of the dyestuff of formula (124) as per Table IV.

Example 25 25.1 Production of the dyestuff of formula NH S 02H 03H 4.5 grs of the dyestuff produced in accordance with the above-details of formula"( 124) are dissolved in ml of water and are mixed at 40 C to a solution of 4 grs -of Na S'9H O in 10 ml of water. The pH value amounts to 13.5. Stirring continues for 2 hours at 40 C and the termination of the reduction is controlled by means of thin-layer chromatography. The pH value is brought to 9 by the addition of sodium bicarbonate. The, 28 grs of sodium chloride are added, stirring continues for 1 hour at 5C, the precipitated dyestuff is suctioned off, washed with 200 ml of 20 percent sodium chloride and dried in a vacuum at C. This product is dissolved in 35 ml of dimethyl formamide at 100 C, suctioned off hot from the undissolved sodium chlride, the dyestuff is precipitated. from the filtrate with 150 ml of iso-propanol, is suctioned off, washed with 50 ml of isopropanol and dried in a vacuum at 100 c.

Yield 3.2 grs of the sodium salt of the compound of formula (a).

25.2 Production of the dyestuff of formula 125 1.4 grs of the dyestuff of formula 12521 are dissolved in 10 ml of water, mixed with 20 ml of a oz-napthalene sulphonic acid sulphuric acid solution'tl litre of this solution contains 1 mol of z-naphthalene sul phonic acid and l'mol of sulphuric acid), cooled to 10 C and added to 5 ml of tn-sodium nitrite solution. This diazo solution is put at 10 C all at once into a solution of 1.4 grs of 1-benzoylamino-8-naphthol-3.6- disulphonic acid, stirred for 4 hours at room temperature and the dyestuff is precipitated with 300 ml of isopropanol. 0.8 grs of dyestuff of formula (125) as per Table III are obtained and same ispurified chromatographically.

26.1 1-( 4-nitrobenzoylbenzene )-4-carboxylic acid- 3"-aminophenylamide-4"-sulphonic acid of formula (l03c) is produced as per instruction 3.3

26.2 Production of the nitroazo dyestuff of formula 1.4 grs of sodium nitrite are dissolved in 15 ml of 96 percent sulphuric acid at between and 10 C, then slowly heated to 70 C and re-cooled to 20 C. Within 1 hour, 8.4 grs of the compound of formula (1030) is added and stirred for 2 hours at 20 C. This creates a clear solution which is stirred into a mixture of 50 grs of ice and 100 ml of water. The diazo compound precipitates, is suctioned off and washed with 200 ml of iced water. This diazo compound is carried into a solution of 3.8 grs of 2-(2,6-dimethylphenylamino)-8- naphthol-6-sulphonic acid, cooled to C in 200 ml of water and stirs it at room temperature for 12 hours. It is then mixed with 300 ml of water and 100 grs of sodium chloride, heated to 90 C, cooled down to C, the precipitated dyestuff is suctioned off and washed with 500 ml of 2.5 percent sodium chloride solution.

Yield 7.9 grs of the sodium salt of the compound of formula (l26b).

2.6.3 Production of the nitro group of the dyestuff of formula (126a) l5 grs of the dyestuff of formula (126a) are dissolved in ml of N-methylpyrrolidine, 5 ml 27 percent ammonia and a solution of 8 grs of Na S-9H O in 30 ml of water is added at 50 C. After 1 hour of stirring at 50 C, the reduction is terminated, as long as the thin-layer chromatograph shows a brownish-red colour after diazotising and coupling with B-naphthol. l0 grs of sodium bicarbonate and 150 ml of percent sodium chloride solution are then added, the solution is suctioned off and after-washed with 100 ml of 25 percent sodium chloride solution. The residue is boiled up with 50 ml of 10 percent sodium chloride solution, cooled down to 10 C, suctioned off, the dyestuff is washed with 50 ml of 2.5 percent sodium chloride solution and dried in a vacuum at 100 C.

Yield 6.3 grs. 26.4 Production'of the dyestuff of formula 26 1.2 grs of the dyestuff obtained as per 26.3 are dissolved in 25 ml of dimethyl formamide and are mixed with 5 ml of naphthalene sulphonic acid-sulphuric acid (see 25.2) and 2 ml of 4n-sodium-nitrite solution at 3 C. Stirring continues for 5 hours at between 3 and 5 HO; S

C, the excess nitrous acid is removed with l nsulphanilic acid solution and a solution of 1 g of lbenzoylamino-8-naphthol-3.6-disulphonic acid in 3 ml of pyridine and 3 ml of 27 ammonia is added. Stirring continues for 12 hours at room temperature, it is then suctioned off and after-washed with ml of isopropanol. Ater drying in a vacuum at 100 C, the dyestuff is extracted with alcohol for 12 hours.

This yields 0.6 grs of dyestuff of formula (126) as per Table III.

m Example 27 1.4 grs of aminoazo dyestuff of are dissolved in 20 ml of N-methylpyrrolidine, mixed with 5 ml of pyridine and heated to C. Then, 0.5 ml of benzoylchloride are added all at once, the temperature will rise to 1 15 C. The reactive solution is diluted with 300 ml of a 10 percent sodium chloride solution and the pH value is set to 0.5 with 37 HCl. The precipi-' tated dyestuff is suctioned off, after-washed with 50ml of a 5 percent sodium chloride solution and dried in a vacuum at 60 C. It is then boiled with 50 ml of isopropanol, suctioned off hot and after-washed with 20 ml of hot isoropanol.

Yield 1.3 grs of the dyestuff of formula (127) as per Table IV.

Example 28 The dyestuff of formula (128) as per Table IV is obtained in accordance with the specification of Example 27 by the acylising of the aminoazo dyestuff of formula (a) with a capronic acid.

The following Tables I to IV show a summary of the dyestuffs of formulas (101) to (128). In all tables:

Column (1) formula No. a

Column (2) Example No.

Column (3) maximum absorption in nm a) measured in DMFIH O 1:1 b) measured in gelatine' The other symbols in Tables I to IV relate to the following formulas:

TABLE Ii (1) (2) M X Y Z '!L D (u) (h) 105..- 5 G O O O- 2 Q 530/556 529/558 S 03H S 0 H 111. 11 Q s02 1 O 520/544 526/550 S 03H S 0311 S 03H S 0 11 V V 7 Q I 7 u I 7 h NH 2 U I I 535/610 600 Table Ill-Continued 'IABLE IV (1) n G (n) SO H 128 2s 2 nC5H11 550/568 556/574 EMBODIMENTS Example 1 3.3 ml of 6 percent gelatine solution, 2.0 ml of a 1 percent aqueous solution of the hardener with the formula \C/ OaNa 0.5 ml of a 1 percent aqueous solutionof the purple dyestuff of formula (I04) and 3.3 ml of silver bromide emulsion containing 35 grs of silver per litre are pipetted into a reaction vessel which is filled up to 10.0 ml with de-ionised water. This solution is forcefully mixed and kept at 40 C for 5 minutes in a water bath.

The pouring solution with a temperature of 40 is poured onto a subtrated glass plate, size 13 cm X 18 cm. After setting at 10 C, the plate is driedin a drying cupboard with circulating air of 32? C.

A strip from this plate cut to 3.5 cm X 18 cm is exposed to 500 Lux/cm through a Kodak 2b 49 blue filter for 24 seconds under a step wedge.

Further procedures are as follows:

1. 10 minutes of developing in a bath containing per litre l g of p-methylaminophenolsulphate, 20 grs of water-free sodium sulphite, 4 grs of hydroquinone, 10 grs of water-free sodium carbonate and 2 grs of potassium bromide.

2. soaking for 2 minutes.

3. stop-fixing for 6 minutes in a bath containing per litre 200 grs of crystallised sodium sulphate, l5 grs of water-free sodium thiosulphate, 25 of crystallised sodium acetate and 13 ml of glacial acetic acid.

4. soaking for 8 minutes.

5. colour bleach for 20 minutes in a bath containingper litre 27.5 ml of 96 sulphuric acid, 10 grs of potassium iodide and 15 ml of a solution of 0.3 grs of 2,3- dimethyl-6-aminoquinoxaline in 50 ml of ethanol.

6. soaking for 4 minutes.

7. residual silver bleach for 8 minutes in a bath containing per litre 50 grs of potassium ferricyanide, l5 grs of potassium bromide, 10 grs of di-sodium phosphate and 14 grs of mono-sodium phosphate.

8. soak for 6 minutes.

9. fix for 6 minutes as stated in 3) l0. soak for 10 minutes.

A brilliant, highly light-fast purple wedge is obtained which is bleached at the location of the originally highest silver density.

Example 2 The following coast are applied to a white opaque acetate foil provided with an adhesive layer:

l. Red-sensitive silver bromide emulsion in gelatine, containing the greenish-blue dyestuff of the formula IIOJS O CH:

The gelatine layers can also contain additives such as wetting agents, hardening agents and stabilisers for the silver halogenide. Otherwise, procedures 'ase of such a nature that the separate layers per square metre of film contain 0.5 grs of the relative dyestuff and the quantity of silver bromide corresponding to between 1 and 1.2 grs of silver.

This film is exposed under a coloured transparency with red, green and blue copy light. The copy is then developed in accordance with the following instructions:

- 1. 6 minutesof development ina .bath containing per litre of water, 50 grs of water-free'sodium sulphite, 0.2 grs of l-phenyl-3-pyrazolidine, 6 grs of hydroquinone, 35 grs of water-free sodium carbonate, 4 grs of potassium bromide and'0.3 grs of benz-triazol. 2. Soak for 5 minutes.

3. Fix for 6 minutes in a solution of 200 sodium thiosulphate, crystallizing and 20 grs of potassium metasulphite in 1 litre of water. 4. Soak for 5 minutes.

5. Colour bleaching for 3 to 12 minutes with a solution containing per litre of water 50 to 80 grs of potassium bromide, 40 to 80 grs of thioure thane, 35 to,80 grs of 30 percent sulphuric acid and, if.required, 0.001 to 0.01 grs of colour bleach catalyst of formula (30).-

6. Soak for minutes.

v 7. Residual silver bleach for 5 minutes with a solution of 60 grs of crystallised copper sulphate, 80 grs of potassium bromideand 15 ml of BC] in one litre of water.

8. Soak for 5 minutes.

9. Fix for 5 minutes as stated in 3.

l0. Soak for 5 minutes.

A light-fast, document-proof positive survey image is obtained.

Similar results are obtained if instead of the dyestuff of formula (1 1 l one of the dyestuffs of formulas 101 (106), 107 or 117 is used. v

Example 3 2. Soak for .2 minutes. I 3. Treat for 2 minutes in a reversing-bath containing son-r per litre 5 grs of potassium bichromate and 5 ml of 96 percent sulphuric acid. 4. Soak for 4 minutes.

5. Treat for 5 minutes in a bath containing per litre 50 grs of water-free sodium sulphite.

l N H03 (32) 6. Soak for 3 minutes.

7. 4 minutes of developing in a bath containing per litre 2 grs of l-phenyl-3-pyrazolidone, 50 grs of waterfree sodium sulphite, 1O grs of hydroquinone, 50- grs of water-free sodium carbonate, 2 grs of sodium hexametaphosphate and 20 ml of a l aquous solution of tertiary butylaminoborane.

8. Soak for 2 minutes.

9. Further processing as stated in Example 3 in 4. to 10.

A brilliant, light-fast, purple wedge opposite ingradation with its original is obtained.

I claim:

1. Silver halide containing photographic material which contains a dyestuff of the formula trifluoromethyl, t-butyl, sulfonamide, N- methylsulfonamide, acetyl, .acetylamino, succinylamino, benzoyl, benzoylamino, carboxybenzoylarnino, amino, cyanofsulfonic acid, niethylsulfonyl 1 and phenylsulfonyl, or 1 a 2-amino-8-hydroxynaphthalene sulphonic acid residue bonded to the azo groupin the 1 position and-which is unsubstituted or contains as amine substituents alkyl of l to 4 carbon atoms, phenyl or phenyl substituted by one or more of methyl, methoxy, chloro,v fluoro, bromo, trifluoromethyl, sulpho, carboxyl, acetyl, sulphomethyl, dimethylcarbamyl, diethylsulfonamide, phenyl and phenoxy,

M, stands for an unsubstituted or substituted benzene radical substituted with halogen atoms, low aklyl or alkoxy groups, sulphonic acid, sulphonic acid amide, carboxylic acid or carboxylic acid amide groups, and D, stands for an unsubstituted or substituted benzene radical substituted with halogen atoms, lower alkyl or alkoxy groups, sulphonic groups, sulphonic acid amide groups, carboxylic acid or carboxylic acid amide groups or an unsubstituted or substituted naphthalene residue with 1 or l sulphonic acid groups as substituents n is l or 2, X is O, S, SO-', SO,-, CO 

2. Photographic material in accordance with claim 1 which contains a dyestuff of the formula A2 - N N-M2 -X- (Y-Z)n 1 -D2 - N N-E2 in which A2 and E2 each possesses a 1-hydroxy-8-amino-naphthalene- 3,5 - or 3,6-disulphonic acid residue or a 2-amino-8-hydroxy-naphthalene- 6-sulphonic acid residue which contains on the nitrogen atom phenyl or substituted phenyl and D2 is phenylene or phenylene substituted with chlorine, methyl, methoxy, sulphonic acid or carboxylic acid groups or a naphthalene disulphonic acid residue and in which X, Y, Z and n have the meaning as stated in claim
 1. 3. Photographic material in accordance with claim 1 which contains a dyestuff of the formula
 4. Photographic material in accordance with claim 1 which contains a dyestuff of the formula
 5. Photographic material in accordance with claim 1, which contains a dyestuff of the formula
 6. Photographic material in accordance with claim 1 which contains a dyestuff of the formula
 7. Photographic material as claimed in claim 1, which contains a dyestuff selected from the group consisting of the azo dyestuffs of the formulae
 8. A photographic light-sensitive material which contains on a support at least one silver halide layer and at least one azo dyestuff of formula A-N N-M-X-(Y-Z) n 1 -Q in which A has the formula 